@import url(https://fonts.googleapis.com/css?family=Lato);
        body {
            display: flex;
            height: 100vh;
            justify-content: center;
            align-items: center;
            background: url("../imgs/3.jpg") 0/cover fixed;
            font-family: "Lato";
        }
        .container{
          margin-top: -8rem ;
        }
        .login-form {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 3rem;
            background: rgba(0, 0, 0, 0.8);
            color: white;
            border-radius: 10px;
            box-shadow: 0 15px 20px rgba(0, 0, 0, 0.5);
            margin-top: -1rem;
        }
        .login-form h1 {
            font-size: 2.5em;
            margin-bottom: 0.3em;
            padding: 12px 0;
        }
        .login-form .form-field {
            position: relative;
            font-size: 20px;
            border-bottom: 1px solid white;
            margin: 20px 0 8px 0;
            transition: 0.4s;
        }
        .login-form .form-field::after {
            position: absolute;
            content: "";
            width: 100%;
            height: 2px;
            bottom: -1px;
            left: 0;
            background: #3498db;
            transform-origin: left;
            transform: scaleX(0);
            transition: 0.4s ease;
        }
        .login-form .form-field:focus-within::after {
            transform: scaleX(1);
        } 
        .login-form .form-field input {
            border: none;
            outline: none;
            background: transparent;
            color: white;
            padding-left: 10px;
        }
        .login-form .form-field input:focus ~ label, .login-form .form-field input:not(:placeholder-shown) ~ label {
            top: 0;
            font-size: 15px;
        }
        .login-form .form-field input:valid ~ label {
            color: #3498db;
        }
        .login-form .form-field input:invalid ~ label {
            color: #e74c3c;
        }
        .login-form .form-field label {
            position: absolute;
            left: 32px;
            top: 24px;
            transition: 0.4s;
        }
        .login-form .btn {
            position: relative;
            outline: none;
            background: transparent;
            color: white;
            border: 2px solid #3398db;
            width: 100%;
            font-size: 1.2em;
            margin: 36px 0 18px 0;
            padding: 6px 0;
            cursor: pointer;
            overflow: hidden;
            transition: 0.5s;
        }
        .login-form .btn::before {
            position: absolute;
            content: "";
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background: linear-gradient(120deg, transparent, rgba(51, 152, 219, 0.5), transparent);
            transform: translateX(-100%);
            transition: 0.5s;
        }
        .login-form .btn:hover {
            box-shadow: 0 0 20px 10px rgba(51, 152, 219, 0.5);
        }
        .login-form .btn:hover::before {
            transform: translateX(100%);
        }
        .login-form a{
          height: 10%;
          margin-left: 55%;
          font-size: 0.7rem;
        }
        .login-form a:hover{
          background: rgb(226, 226, 226);
        }
        .col{
          margin-top: -2rem;
        }